[docs] AgentBase — CLI & MCP guides + Aug release notes — VI + EN

[greennode-vdb]

VI + EN docs for AgentBase CLI and AgentBase MCP, plus the August 2026 release-note entries announcing them.

New pages

• Vietnamese/ai-stack/agent-base/su-dung-greennode-cli-de-quan-ly-agentbase.md
• Vietnamese/ai-stack/agent-base/su-dung-greennode-mcp-de-quan-ly-agentbase.md
• English/ai-stack/agent-base/manage-agentbase-with-the-greennode-cli.md
• English/ai-stack/agent-base/manage-agentbase-with-the-greennode-mcp.md

Structure follows the existing VKS getting-started pages (manage-vks-with-the-greennode-cli.md / manage-vks-with-the-greennode-mcp.md). Sources: the greennode-cli docs (grn agentbase command tree) and the vngcloud/greennode-agentbase-mcp repo.

Release notes

• Vietnamese/ai-stack/release-notes.md + English/ai-stack/release-notes.md — new GreenNode AgentBase — CLI & MCP entry at the top of August 2026
• Vietnamese/gioi-thieu-chung/thong-bao-va-cap-nhat/2026.md + English/overview/product-updates-all/2026.md — same entry in the Tính năng mới / New features tab

Nav

• Vietnamese/SUMMARY.md + English/SUMMARY.md — 2 entries each, under GreenNode AgentBase after Getting Started

Notes for reviewers

• The MCP Gateway HTTP endpoint is left as a <agentbase-mcp-gateway-endpoint> placeholder with a pointer to support, rather than hardcoding the deployment-specific URL from the repo quickstart. Replace it if a shared customer endpoint is intended.
• The repo's direct-runtime fallback endpoint is intentionally omitted — it bypasses the Gateway's auth and audit layer.
• CLI links point at GreenNodeHub/greennode-cli and greennodehub.github.io, which is where the project now lives. The two existing VKS pages still reference vngcloud/... and spell the config dir ~/.greenode (missing an n); worth a follow-up fix.
• The public CLI reference site does not yet list the agentbase command group, so the page carries a hint pointing readers to grn agentbase --help.

🤖 Generated with Claude Code